SiloPatrol® SE can improve
material inventory measurement and plant safety
Monitor Technologies LLC announces that its SiloPatrol® SE
smart cable-based sensors are used to successfully
automate the measurement of granular plastic and other
powder bulk solids material in storage silos. The SiloPatrol
automates inventory measurement by use of its HMI operator
interface or PC-based software. This system also improves
plant safety by eliminating personnel from climbing
silos to take measurements of the material level.
SiloPatrol SE uses time-proven weight and cable techniques and combines patent
pending technology, a new split-compartment enclosure design, state-of-the-art
optics, SMT (surface mount electronic technology) and other valuable features
to produce a rugged, reliable and accurate measuring system designed for the
harshest and most dynamic conditions. Also, please visit Monitor during NPE 2009
in the West Hall.
Monitor Technologies LLC is a pioneering supplier of level measurement instrumentation,
solids flow monitors, particle emission monitors and aeration devices for the
worldwide powder and bulk solids markets. The experience and market knowledge
gained over 50 years of business has earned Monitor a reputation for providing
high quality and reliable product solutions.
For more information refer to www.monitortech.com or
contact us at 800-766-6486 in the US or 630-365-9403.
The TrueCap® Model MK-2
RF Capacitance point level probe is designed to provide a superior
and stable sensitivity threshold making it suitable for a variety
of powder / bulk solids and some liquid or slurry applications.
Advanced features of the Model MK-2 include: > Automatic immunity to material build-up on
the probe by its driven shield design > Push-button calibration > Enhanced temperature compensation > Maximized reliability via smart sensing algorithms
like “self-validating” fail-safe protection > Visible status LED on ordinary location units > Versatility through a variety of configuration
options including: hazardous location version, split architecture
design, quick-connect process connection, stub probe, cable extensions,
solid extensions, Nylon® probes, Ryton® - equiv. probes,
A practical application for the TrueCap would be to use this level sensor where
a residual material build-up on a different sensor would cause a false material
Principle of Operation for the TrueCap RF Capacitance Level
The vessel wall and the active probe element establish an impedance reference
between each other when exposed to air which has a dielectric constant of 1.
When materials with a dielectric constant greater than 1 are in close proximity
to the probe, the impedance of the sensing field between the sensor and the vessel
wall will change. Once the amount of change exceeds a threshold that was electronically
determined during the calibration process, an output relay will either be energized
or de-energized depending upon the position of the fail-safe selector on the
probe’s electronic circuit board. A change of as little as .5 pico-farad
is all that is necessary for the probe to sense the presence of material.